Spray tans and new nail and hair extensions are the usual preparations for celebrity contestants entering the Big Brother house.

But this year participants have been instructed to watch the whole of last year's 'race row' series beforehand in order to learn how NOT to behave.

Show bosses are anxious that there are no repeat scenarios from last year's series when reality star Jade Goody, model Danielle Lloyd and singer Jo O'Meara were seen bullying Bollywood star Shilpa Shetty.

Ulrika Jonsson has been paid the largest amount to appear on the show - netting a £175,000 fee - more than any contestant is thought ever to have been paid.

TV bosses are hoping the 41-year-old Swede will reveal details of some of her former relationships including former England manager Sven Goran Eriksson, TV presenter John Leslie and footballer Stan Collymore.

Programme makers had hoped that she would be going into the house with her love rival Nancy Dell-Olio who was going out with Eriksson when Jonsson had an affair with him.

But the idea was shelved when Jonsson said she would pull out of the show if Dell'Olio was in the house as well.

Jonsson, a former weather presenter and TV show host, and ten other guests, will be recorded over four weeks by 35 cameras and 40 microphones.

Model behaviour: Glamour girl Lucy Pinder, left, and Paula Hamilton, right, are among the female contestants entering the Big Brother house on Friday

The worst-paid celebrity is Ben Adams, formerly of the boy band A1, who will earn £20,000.

The second most highly-paid will be topless model Lucy Pinder, who is thought to be earning £150,000.

Troyer, who appeared in the Austin Powers films, will receive £136,000 while soul singer La Toya Jackson will get £100,000.

Buena and Terry Christian, former host of the 1990s TV show The Word, will be given between £50,000 and £75,000 each.